DIYbanter - View Single Post - MCB tripping

Bob Minchin[_4_]

John Rumm wrote:
On 09/02/2017 09:10, wrote:

presently there is an C6 MCB can I replace it to 16 to resolve this
problem

What kind of water heating coil are we talking about?

(A 6A MCB sounds rather low for most heating circuits - that would limit
the heater power to about 1300W - however you can only substitute a
higher trip current MCB if the cable size is large enough to remain
protected)

One has to wonder why a type C is being used instead of the more usual
type B for domestic circuits?